Headrest and vehicle seat

Abstract

To provide a headrest which enables improvement in stability of support of a cell, and to provide a vehicle seat.SOLUTION: A headrest S3 includes: a headrest body 31 with which a head of a seated person may contact; and a cell 40 which may expand or contract and is provided at the headrest body 31. The headrest body 31 includes: a shell 310 which supports the cell 40; a headrest pad 320 which covers the shell 310 and is partially disposed between the shell 310 and the cell 40; and a headrest surface cover 330 which covers the cell 40 and the headrest pad 320.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a headrest and a vehicle seat. [Background technology]

[0002] Conventionally, headrests equipped with a cell that can expand and contract are known (Patent Document 1). In this technology, the expansion or contraction of the cell moves the left and right wings provided at the front of the headrest. The cell is supported from behind by a plate-shaped base. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2008-521544 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the prior art, there is a possibility that the support for the cells may become unstable when the cells expand. Therefore, it is desirable to improve the stability of the cell support. [Means for solving the problem]

[0005] The headrest includes a headrest body with which the head of a seated person can come into contact, and a cell that can expand and contract and is provided in the headrest body. The headrest body includes a cell support that supports the cell, a pad that covers the cell support, a portion of the pad being positioned between the cell support and the cell, and a cover that covers the cell and the pad.

[0006] By disposing a portion of the pad between the cell support and the cell, the cell can be supported by the cell support via the pad. When the cell expands or contracts, the pad elastically deforms in response to the change in shape of the cell, thereby improving the stability of the cell support.

[0007] The headrest may further include a hose connected to the cell, and the pad may have a first through-hole for passing the hose through the inside of the headrest body.

[0008] The pad has the first through hole, so that the hose can be easily passed through the inside of the headrest body.

[0009] The pad may have a first recess that is recessed toward the inside of the headrest, and the first through-hole may be formed in a bottom surface of the first recess.

[0010] The pad has a first recess, which allows a portion of the hose and the connection between the cell and the hose to be accommodated in the first recess, thereby reducing the impact of the hose and the connection between the cell and the hose, thereby preventing a deterioration in seating comfort.

[0011] The first recess is a groove in which a portion of the hose is placed, and the pad has a first surface that supports the head of the occupant and a second surface formed around the first surface and positioned further rearward as it moves away from the first surface, and the first through hole and at least a portion of the groove may be formed in the second surface.

[0012] By forming the first through-hole and at least a portion of the groove not on the first surface of the pad that supports the occupant's head but on the second surface around the first surface, it is possible to prevent the occupant's head from hitting the hose, thereby improving seating comfort.

[0013] The cell support may have a second through hole for passing the hose therethrough, and the second through hole may overlap with the first through hole.

[0014] The second through-hole of the cell support overlaps with the first through-hole of the pad, allowing the hose to be easily passed through. Also, the portion of the cell support around the second through-hole can support the portion of the pad around the first through-hole.

[0015] The headrest may further include a sheet member that is arranged between the cell and the skin and overlaps the cell, and the first through hole may be formed above or below the cell when viewed from the direction in which the cell and the sheet member overlap, and the sheet member may extend in the vertical direction to the position of the first through hole.

[0016] By the sheet member extending up to the position of the first through hole in the vertical direction, the portion of the pad around the first through hole can be reinforced by the sheet member.

[0017] The pad may have a second recess that is recessed toward the inside of the headrest body and in which the cell is disposed.

[0018] By providing the pad with the second recess in which the cell is placed, the position of the cell can be stabilized and the formation of a step between the pad and the cell can be prevented.

[0019] The headrest may further include a sheet member that is placed between the cell and the skin and overlaps the cell, and the pad may have a third recess that is recessed toward the inside of the headrest body and in which the sheet member is placed, and the second recess may be formed on the bottom surface of the third recess.

[0020] The pad has a third recess in which the seat member is placed, which stabilizes the position of the seat member. It also prevents a step from being formed between the pad and the seat member. The second recess is formed on the bottom surface of the third recess, which prevents the portion where the cell is placed from rising. This improves the seating feeling.

[0021] The headrest may include a movable body that protrudes from the headrest body and an actuator for moving the movable body, and the cell support may be a shell that houses the actuator.

[0022] By using the cell support as a shell that houses an actuator for moving the movable body, the shell that houses the actuator can be used as a member that supports the cell, which reduces the number of parts in the headrest compared to when the cell support and the shell are separate members.

[0023] The headrest may include an airbag device having an airbag, and the cell support may be a shell that houses the airbag device.

[0024] By including an airbag device in the headrest, safety can be improved. By using the shell that houses the airbag device as the cell support, the shell that houses the airbag device can be used as a member that supports the cell. Furthermore, the number of parts in the headrest can be reduced compared to when the cell support and the shell are separate members.

[0025] The vehicle seat includes a seat cushion, a seat back, and the headrest. [Effects of the Invention]

[0026] By disposing a portion of the pad between the cell support and the cell, the cell can be supported by the cell support via the pad. When the cell expands or contracts, the pad elastically deforms in response to the change in shape of the cell, thereby improving the stability of the cell support.

[0027] The pad has the first through hole, so that the hose can be easily passed through the inside of the headrest body.

[0028] The pad has a first recess, which allows a portion of the hose or the connection between the cell and the hose to be accommodated in the first recess, thereby reducing the feeling of contact with the hose or the connection, and preventing a deterioration in seating comfort.

[0029] By forming the first through-hole and at least a portion of the groove not on the first surface of the pad that supports the occupant's head but on the second surface around the first surface, it is possible to prevent the occupant's head from hitting the hose, thereby improving seating comfort.

[0030] The second through-hole of the cell support overlaps with the first through-hole of the pad, allowing the hose to be easily passed through. Also, the portion of the cell support around the second through-hole can support the portion of the pad around the first through-hole.

[0031] By the sheet member extending up to the position of the first through hole in the vertical direction, the portion of the pad around the first through hole can be reinforced by the sheet member.

[0032] By providing the pad with the second recess in which the cell is placed, the position of the cell can be stabilized and the formation of a step between the pad and the cell can be prevented.

[0033] The pad has a third recess in which the seat member is placed, which stabilizes the position of the seat member. It also prevents a step from being formed between the pad and the seat member. The second recess is formed on the bottom surface of the third recess, which prevents the portion where the cell is placed from rising. This improves the seating feeling.

[0034] By using the cell support as a shell that houses an actuator for moving the movable body, the shell that houses the actuator can be used as a member that supports the cell, which reduces the number of parts in the headrest compared to when the cell support and the shell are separate members.

[0035] By including an airbag device in the headrest, safety can be improved. By using the shell that houses the airbag device as the cell support, the shell that houses the airbag device can be used as a member that supports the cell. Furthermore, the number of parts in the headrest can be reduced compared to when the cell support and the shell are separate members. [Brief explanation of the drawings]

[0036] [Figure 1] 1 is a perspective view showing a vehicle interior member according to an embodiment. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 2 is a perspective view showing a headrest pad, a cell, and a planar heater. [Figure 5] FIG. 10 is a front view of the headrest pad and the planar heater. [Figure 6] FIG. 10 is a diagram showing the arrangement of electrical wires and hoses when the headrest is viewed from above and behind. [Figure 7] FIG. 10 is a top view of the support member and the pillar. [Figure 8] (a) is a perspective view of the headless unit from the front, and (b) is a perspective view of the headless unit from the back. [Figure 9] FIG. 2 is a cross-sectional view showing the configuration of a movable body. [Figure 10] 1A is a cross-sectional view showing the configuration of a movable body, and FIG. 1B is a perspective view showing a through-hole formed in a side surface of the movable body. [Figure 11] FIG. 2 is a cross-sectional view perpendicular to the longitudinal direction of the movable body. [Figure 12] 10(a) and 10(b) are diagrams showing the operation of the movable body. [Figure 13] 10(a) and 10(b) are diagrams showing the operation of the movable body. [Figure 14] 1A is a perspective view showing a headrest frame according to a first modified example, and FIG. 1B is a cross-sectional view showing a headrest. [Figure 15] FIG. 10 is a perspective view showing a headrest frame according to a second modified example. [Figure 16] FIG. 11 is a diagram showing the arrangement of electric wires and hoses when a headrest according to a third modified example is viewed from above and behind. [Figure 17] 13A is an exploded perspective view showing a first link and a second link of a movable body according to a fourth modified example, and FIG. 13B is a perspective view showing a holding portion. [Figure 18] 10(a) to 10(c) show a movable body according to a fifth modified example. [Figure 19] FIG. 10 is a cross-sectional view showing a headrest according to a sixth modified example. [Figure 20] FIG. 13 is a perspective view showing a vehicle seat according to a seventh modified example. DETAILED DESCRIPTION OF THE INVENTION

[0037] Next, an embodiment will be described. 1, a vehicle interior member 1 includes a vehicle seat S, a movable body 10, and an actuator 20 for moving the movable body 10. Note that the front / rear, left / right, and top / bottom directions are based on the front / rear, left / right, and top / bottom directions as seen from the perspective of a person seated in the vehicle seat S.

[0038] The vehicle seat S is an example of a vehicle seat provided in a vehicle. In the embodiment, the vehicle seat S is a seat provided in a vehicle, which is an example of a vehicle. Specifically, the vehicle seat S is a seat provided in an automobile. The vehicle seat S includes a seat cushion S1, a seat back S2, and a headrest S3. The vehicle seat S is an example of an interior member main body. In other words, the interior member main body is a vehicle seat S having a headrest S3.

[0039] The seat cushion S1 includes a seat cushion frame, a seat cushion pad that covers the seat cushion frame, and a seat cushion skin that covers the seat cushion frame and the seat cushion pad. The seat back S2 includes a seat back frame, a seat back pad that covers the seat back frame, and a seat back skin that covers the seat back frame and the seat back pad.

[0040] The movable body 10 is a decorative item separate from the seat cushion, seat back, headrest, armrest, and ottoman that are usually provided on a seat. The movable body 10 has a shape that resembles a part of an animal's body. The movable body 10 has an elongated shape. In the embodiment, the movable body 10 has a shape that resembles a cat's tail. The movable body 10 is provided so as to protrude outside the vehicle seat S, which serves as the interior member main body. More specifically, the movable body 10 is provided so as to protrude from the headrest S3.

[0041] The headrest S3 includes a headrest body 31 and a pair of pillars 32 serving as two legs. The headrest body 31 is disposed behind the head of the seated occupant and is contactable with the head of the seated occupant.

[0042] The pillars 32 are rod-shaped members made of metal. In this embodiment, the pillars 32 are hollow. Two pillars 32 are provided, spaced apart from each other on the left and right. The pillars 32 are provided to extend downward from the headrest main body 31. The pair of pillars 32 are connected to the seat back S2 and support the headrest main body 31.

[0043] As shown in FIGS. 1 and 2, the headrest S3 includes a movable body 10, an actuator 20, a cell 40, a hose 50, a sheet heater 60, and an electric wire 70. 2, the cell 40 is a bag-shaped member that can expand and contract. The cell 40 is provided in the front part of the headrest main body 31.

[0044] The hose 50 is a hose that allows fluid to flow into the cell 40 and discharge fluid from the cell 40. The fluid is a gas or a liquid. As an example, the fluid is air. One end of the hose 50 is connected to the cell 40, and the other end is connected to a pump P1. The pump P1 is provided, for example, inside the seat back S2.

[0045] The actuator 20 and the planar heater 60 are an example of electrical equipment provided in the headrest main body 31. In other words, the electrical equipment includes the actuator 20 and the planar heater 60. The planar heater 60 is provided in the front part of the headrest main body 31. The planar heater 60 is arranged so as to overlap with the cell 40 when viewed from the front. The planar heater 60 is arranged between the cell 40 and the headrest skin 330. The planar heater 60 is an example of a seat member.

[0046] The electric wire 70 is an electric wire for supplying power to electrical components provided in the headrest main body 31. The electric wire 70 includes a first electric wire 71 capable of supplying power to the actuator 20 and a second electric wire 72 capable of supplying power to the sheet heater 60. One end of the first electric wire 71 is connected to the actuator 20. One end of the second electric wire 72 is connected to the sheet heater 60.

[0047] The headrest main body 31 includes a shell 310, a headrest pad 320 as a pad, and a headrest skin 330 as a skin.

[0048] The shell 310 is a thin plate-like member. The shell 310 is made of, for example, resin. The shell 310 houses the actuator 20. The shell 310 covers the actuator 20 at least from the front and rear. The shell 310 has a front cover 311 and a rear cover 312. The front cover 311 has a container shape that opens toward the rear, and the rear cover 312 has a container shape that opens toward the front. The shell 310 is box-shaped by matching the openings of the front cover 311 and the rear cover 312. The front cover 311 and the rear cover 312 are assembled, for example, by engaging a claw provided on one with the other, or by inserting a screw into a through-hole provided on one and fastening it to the other. The shell 310 is an example of a cell support body. In other words, the cell support body is the shell 310.

[0049] The headrest pad 320 is a member that covers the shell 310. The headrest pad 320 is made of a foam resin such as urethane foam. The headrest pad 320 is attached to the shell 310. The headrest pad 320 supports the cell 40 and the sheet heater 60. The headrest pad 320 has a front pad 321 that covers the shell 310 from the front. The front pad 321, which is a part of the headrest pad 320, is disposed between the shell 310 and the cell 40. The shell 310 supports the cell 40 via the front pad 321 of the headrest pad 320.

[0050] The front pad 321 has a first through hole 322 and a first recess 323. In the embodiment, the first through hole 322 and the first recess 323 are formed below the cell 40 when viewed from the direction in which the cell 40 and the planar heater 60 overlap. Specifically, the first through hole 322 and the first recess 323 are formed below the cell 40 when viewed from the front.

[0051] The first through hole 322 is a through hole for passing the hose 50 inside the headrest main body 31. The first through hole 322 penetrates from front to back. The first through hole 322 is formed in the bottom surface of the first recess 323. In the embodiment, the first through hole 322 is formed in the lower end of the bottom surface of the first recess 323.

[0052] The first recess 323 is a recess that is recessed toward the inside of the headrest S3. Specifically, the first recess 323 has a shape that is recessed toward the rear. In the embodiment, the first recess 323 is a groove that extends vertically. A part of the hose 50 is disposed in the first recess 323. Specifically, one end of the hose 50 is disposed in the first recess 323.

[0053] The headrest pad 320 has a first surface 320A and a second surface 320B on the front side. The first surface 320A is a surface that supports the head of a seated occupant. The first surface 320A is located approximately in the center of the front surface of the headrest pad 320. The second surface 320B is a surface formed around the first surface 320A. Specifically, the second surface 320B is formed above, below, and to the left and right of the first surface 320A. The second surface 320B curves so that it is positioned further back as it moves away from the first surface 320A.

[0054] The first through-hole 322 and the lower end of the first recess 323, which is part of a groove, are formed in the second surface 320B. In the embodiment, the first through-hole 322 and the lower end of the first recess 323 are formed in a portion of the second surface 320B that is located below the first surface 320A. The upper end of the first recess 323 is formed in the first surface 320A.

[0055] The shell 310 serving as the cell support body has a second through hole 313. More specifically, the front cover 311 has the second through hole 313. The second through hole 313 is a through hole for passing the hose 50 through. The second through hole 313 overlaps with the first through hole 322 of the headrest pad 320. The hose 50 passes from the outside of the headrest pad 320 through the first through hole 322 and the second through hole 313 and enters the shell 310.

[0056] The headrest pad 320 further has a third through hole 324 on its lower surface, and the shell 310 further has a fourth through hole 314 on its lower surface. The third through hole 324 and the fourth through hole 314 are through holes that penetrate vertically. The third through hole 324 and the fourth through hole 314 communicate with the inside and outside of the headrest main body 31. The fourth through hole 314 overlaps with the third through hole 324. A second electric wire 72 of the electric wires 70 passes through the third through hole 324 and the fourth through hole 314. The second electric wire 72 passes from the outside of the headrest pad 320 through the third through hole 324 and the fourth through hole 314 and enters the shell 310.

[0057] The headrest skin 330 is a member that covers the headrest pad 320, the cells 40, and the sheet heater 60. The headrest skin 330 is made of, for example, leather or fabric.

[0058] The headrest S3 further includes a support member 340 provided on the headrest main body 31. The support member 340 is a member that supports the actuator 20 as an electrical component. In the embodiment, the support member 340 includes a first bracket 350, a second bracket 360, a connecting member 370, and a reinforcing member 380. In other words, the headrest main body 31 further includes the first bracket 350, the second bracket 360, the connecting member 370, and the reinforcing member 380.

[0059] The first bracket 350 is a member to which the actuator 20 is fixed. The first bracket 350 is formed, for example, by bending a metal plate. The first bracket 350 includes a first lower wall 351 extending in the front-rear direction, a first front wall 352 extending upward from the front end of the first lower wall 351, and a first rear wall 353 extending upward from the rear end of the first lower wall 351. In this embodiment, the first bracket 350 does not include walls extending upward from the left and right ends of the first lower wall 351 (see also FIG. 3). The first bracket 350 has a U-shape when viewed in the left-right direction. The vertical dimension of the first front wall 352 is larger than the vertical dimension of the first rear wall 353. The upper end of the first front wall 352 is located higher than the upper end of the first rear wall 353.

[0060] The front portion of the first bracket 350 is fixed to the front portion of the shell 310. Specifically, the first front wall 352 is fixed to the front portion of the shell 310. More specifically, the front cover 311 of the shell 310 has a front wall 311A ​​and a plurality of front fixing portions 311B that protrude rearward from the front wall 311A. The front fixing portions 311B have a cylindrical shape with a bottom and have a through-hole in the bottom. The first front wall 352 of the first bracket 350 is fixed to the front fixing portions 311B with screws 91.

[0061] The rear portion of first bracket 350 is fixed to the rear portion of shell 310. Specifically, first rear wall 353 is fixed to the rear portion of shell 310. More specifically, rear cover 312 of shell 310 has rear wall 312A and multiple rear fixing portions 312B protruding forward from rear wall 312A. Rear fixing portion 312B has a cylindrical shape with a bottom and has a through-hole in the bottom. First bracket 350 has first rear wall 353 fixed to rear fixing portions 312B with screws 92.

[0062] The screw 91 is passed through a through-hole in the front fixing portion 311B from the outside (front) to the inside (rear) of the shell 310 and fastened to a first front wall 352 of the first bracket 350. The screw 92 is passed through a through-hole in the rear fixing portion 312B from the outside (rear) to the inside (front) of the shell 310 and fastened to a first rear wall 353 of the first bracket 350. This makes it easier to fasten the shell 310 and the first bracket 350 to which the actuator 20 is fixed, compared to when the screws 91, 92 are passed through from the inside to the outside of the shell 310 and fastened.

[0063] Furthermore, because front fixing portion 311B and rear fixing portion 312B protrude toward the inside of shell 310, no protruding parts are formed on the outer surface of shell 310, so the head of the seated occupant does not feel any protruding parts. This makes it possible to prevent a decrease in seating comfort.

[0064] The second bracket 360 is a member for fixing the actuator 20 to the first bracket 350. The second bracket 360 is formed, for example, by bending a metal plate. The second bracket 360 includes a second lower wall 361 extending in the front-rear direction, and a second front wall 362 extending upward from the front end of the second lower wall 361. The second bracket 360 has an L-shape when viewed from the left-right direction.

[0065] The second front wall 362 is a wall to which the actuator 20 is fixed. The actuator 20 is disposed behind the second front wall 362 and fixed to the second front wall 362 by screws 93. The second lower wall 361 is a wall fixed to the first lower wall 351 of the first bracket 350. The second lower wall 361 is fixed to the first lower wall 351 of the first bracket 350 by bolts 94. The actuator 20 is disposed above the second lower wall 361. The actuator 20 and the second lower wall 361 are spaced apart from each other in the vertical direction.

[0066] The first front wall 352 of the first bracket 350 and the second front wall 362 of the second bracket 360 are spaced apart from each other in the front-to-rear direction. The first rear wall 353 of the first bracket 350 and the actuator 20 are spaced apart from each other in the front-to-rear direction. The first front wall 352 of the first bracket 350 extends above the actuator 20. In other words, the upper end of the first front wall 352 is located above the upper end of the actuator 20.

[0067] As shown in FIGS. 2 and 3 , the connecting member 370 is a member that connects the pair of pillars 32 and the first lower wall 351 of the first bracket 350. The connecting member 370 is made of, for example, a metal plate. The connecting member 370 extends left and right and connects the two pillars 32. The connecting member 370 is fixed to the first lower wall 351 of the first bracket 350 by welding. Furthermore, the side surfaces of the two pillars 32 (the first leg 210 and the second leg 220) are each fixed to the connecting member 370 that constitutes the support member 340 by welding (see welded portion W). The connecting member 370 is disposed in front of the two pillars 32. The connecting member 370 has a shape that is concave from bottom to top at its lower end. Specifically, the connecting member 370 has a recess 371 that is concave from bottom to top at its lower end.

[0068] The reinforcing member 380 is a member fixed to both the first lower wall 351 of the first bracket 350 and the connecting member 370. The reinforcing member 380 is made of, for example, a metal plate. Two reinforcing members 380 are provided, spaced apart on the left and right. When viewed from the left and right direction, the reinforcing member 380 has a substantially triangular shape. An upper end of the reinforcing member 380 is fixed to the first lower wall 351 of the first bracket 350 by welding. A rear end of the reinforcing member 380 is fixed to the connecting member 370 by welding.

[0069] The first front wall 352 and the first rear wall 353 of the first bracket 350 have chamfered portions 352A, 353A on the left and right sides of the upper end portion, respectively. The chamfered portion 353A of the first rear wall 353 is larger than the chamfered portion 352A of the first front wall 352.

[0070] As shown in Fig. 4, two cells 40 are provided side by side. Correspondingly, two first through holes 322 and two first recesses 323 are provided side by side. A hose 50 is provided for each cell 40. The planar heater 60 is arranged so as to overlap two cells 40 when viewed from the front.

[0071] The headrest pad 320 has a second recess 325 and a third recess 326 on the front side. The second recess 325 and the third recess 326 are recesses that are recessed toward the inside of the headrest main body 31. Specifically, the second recess 325 and the third recess 326 have a shape that is recessed toward the rear.

[0072] Two second recesses 325 are provided side by side on the left and right. In each of the second recesses 325, a cell 40 is disposed. The sheet heater 60 is disposed in the third recess 326. The second recess 325 is formed on the bottom surface of the third recess 326. Specifically, the second recess 325 is formed so as to be recessed rearward from the bottom surface of the third recess 326. The third recess 326 is formed so as to pass between the two first through-holes 322 and extend to the lower end of the headrest pad 320.

[0073] 5, when viewed from the front, the planar heater 60 arranged in the third recess 326 extends in the vertical direction to the position of the first through-hole 322. Furthermore, in this embodiment, the planar heater 60 passes between the two first through-holes 322 and extends in the vertical direction to the position of the lower end of the headrest pad 320.

[0074] As shown in FIG. 6 , the headrest S3 includes a first leg 210 and a second leg 220. The first leg 210 and the second leg 220 are aligned side by side. The first leg 210 is one of a pair of pillars 32, and the second leg 220 is the other of the pair of pillars 32. Specifically, the first leg 210 is the left pillar 32, and the second leg 220 is the right pillar 32. In other words, the pair of pillars 32 as legs includes the first leg 210 and the second leg 220.

[0075] The first leg 210 has a cylindrical shape and has a first opening 211 at its upper end. The first opening 211 is an opening through which the first electric wire 71 and the second electric wire 72 serving as the electric wire 70 pass. The first electric wire 71 and the second electric wire 72 pass through the first opening 211 and enter the first leg 210. The first electric wire 71 and the second electric wire 72 pass through the first leg 210, and the other ends thereof extend from the lower end of the first leg 210 to the outside of the headrest S3.

[0076] The second leg 220 has a cylindrical shape and has a second opening 221 at its upper end. The second opening 221 is an opening through which the hoses 50 pass. The two hoses 50 pass through the second opening 221 and enter the second leg 220. The two hoses 50 pass through the second leg 220, and the other ends thereof extend from the lower end of the second leg 220 to the outside of the headrest S3.

[0077] 7, the first bracket 350 constituting the support member 340 has a third opening 354. The third opening 354 is an opening through which the first electric wire 71 of the electric wires 70 passes. The third opening 354 is formed in a first lower wall 351 of the first bracket 350. In the embodiment, the third opening 354 is formed as a recessed portion recessed from the left edge of the first lower wall 351 toward the right. The third opening 354 overlaps with the first opening 211 of the first leg 210 when viewed from above.

[0078] As shown in FIGS. 8(a) and 8(b), the movable body 10 is provided on the headrest main body 31. The movable body 10 is provided so as to protrude outside the headrest main body 31. More specifically, the headrest main body 31 has a support surface 31A on the front side that supports the head of a seated occupant. The movable body 10 is provided so as to protrude outside the headrest main body 31 from a surface of the headrest main body 31 that is different from the support surface 31A. Specifically, the movable body 10 is provided so as to protrude outside the headrest main body 31 from the left side surface of the headrest main body 31.

[0079] The headrest S3 has a recess 31B on its surface. The recess 31B is capable of accommodating the movable body 10, as shown by the imaginary line in FIG. 8(b). The recess 31B is formed to extend laterally from near the base of the movable body 10 to the upper surface of the headrest main body 31. The recess 31B has a shape that is recessed toward the inside of the headrest main body 31. Specifically, the recess 31B has a shape that is recessed downward.

[0080] 9 and 10(a), the movable body 10 is provided with a wire 130, a cell 140, a hose 150, a sheet heater 160, and an electric wire 170. In the embodiment, the vehicle interior member 1 (see FIG. 1) further includes a movable body main body 110, a movable body skin 120, the wire 130, the cell 140, the hose 150, the sheet heater 160, the electric wire 170, and a control unit 180.

[0081] The movable body main body 110 is a flexible, long member. In this embodiment, the movable body main body 110 has a shape resembling a long tail. The movable body main body 110 is made of, for example, silicone rubber. The movable body skin 120 is a member that covers the movable body main body 110, the cells 140, and the planar heater 160. In the embodiment, the movable body skin 120 is made of leather, fabric, or the like, with fur on the surface so that the movable body 10 has a shape resembling a cat's tail.

[0082] The wires 130 are wires for moving the movable body 10. In this embodiment, four wires 130 are provided (see FIG. 11 ). The wires 130 move the movable body 10 by changing the traction force thereof using the actuator 20. The actuator 20 has multiple winches inside for winding up and unwinding the wires 130. The wires 130 are arranged inside the movable body 10 along the movable body 10. More specifically, the wires 130 are arranged inside the movable body main body 110. Specifically, the movable body main body 110 has multiple wire insertion holes 111 extending in the longitudinal direction of the movable body main body 110, and the wires 130 are arranged to pass through the wire insertion holes 111 of the movable body main body 110.

[0083] The cells 140 are bag-shaped members that can expand and contract. A plurality of the cells 140 are provided in the movable body 10. Each cell 140 is fixed to the surface of the movable body main body 110. The cells 140 are disposed between the movable body main body 110 and the movable body skin 120.

[0084] The hose 150 is a hose that allows fluid to flow into the cell 140 and fluid to be discharged from the cell 140. As an example, the fluid is air. One end of the hose 150 is connected to the cell 140, and the other end is connected to the pump P2. The pump P2 is provided, for example, inside the seat back S2. In this embodiment, the hose 150 passes through a second leg 220 (see FIG. 6) of the headrest S3, and the other end thereof extends from the lower end of the second leg 220 to the outside of the headrest S3.

[0085] The hose 150 is arranged inside the movable body 10 along the movable body 10. More specifically, the hose 150 has a first hose 151 and a plurality of second hoses 152. The first hose 151 of the hose 150 extends along the movable body 10 inside the movable body 10. The first hose 151 is arranged inside the movable body main body 110. More specifically, the movable body main body 110 has a hose insertion hole 112 extending in the longitudinal direction of the movable body main body 110, and the first hose 151 is arranged to pass through the hose insertion hole 112 of the movable body main body 110.

[0086] 11 , the hose 150 is disposed closer to the center of a cross section of the movable body 10 perpendicular to the longitudinal direction than the wire 130. Specifically, the hose 150 is disposed such that the first hose 151 is disposed closer to the center of the cross section of the movable body 10 than the wire 130. In the embodiment, in a cross section of the movable body 10 perpendicular to the longitudinal direction, the hose insertion hole 112 is formed in the center of the movable body main body 110, and the four wire insertion holes 111 are formed in positions close to the outer surface of the movable body main body 110. As a result, the first hose 151 passing through the hose insertion hole 112 is disposed at the center of the movable body 10, and the wire 130 passing through the wire insertion hole 111 is disposed close to the outer surface of the movable body 10.

[0087] As shown in FIGS. 10(a) and 10(b), the second hose 152 branches off and extends from the first hose 151. The number of second hoses 152 provided is the same as the number of cells 140, and each second hose 152 is connected to a corresponding cell 140. A plurality of through holes 113 are formed on the side surface of the movable body 10. Specifically, the plurality of through holes 113 are formed on the side surface of the movable body main body 110. The through hole 113 is a through hole through which the second hose 152 of the hose 150 passes, and communicates between the outside and the inside (hose insertion hole 112) of the movable body main body 110. The through hole 113 is larger in cross-sectional size than the hose 150. Specifically, the through hole 113 is larger in cross-sectional size than the portion of the hose 150 that passes through the through hole 113. Specifically, the through hole 113 is larger in cross-sectional size than the second hose 152. In this embodiment, the second hose 152 has a cylindrical shape, and the through-hole 113 is an elongated hole whose dimension in the longitudinal direction of the movable body 10 is larger than the diameter of the second hose 152.

[0088] A plurality of planar heaters 160 are provided corresponding to the cells 140. The planar heaters 160 are arranged so as to overlap with the corresponding cells 140. The planar heaters 160 are arranged between the movable body main body 110 and the movable body skin 120. The planar heaters 160 are arranged between the corresponding cells 140 and the movable body skin 120.

[0089] The electric wire 170 is an electric wire for supplying power to the planar heater 160. The electric wire 170 is connected to the planar heater 160. In the embodiment, the electric wire 170 passes between the movable body main body 110 and the movable body skin 120, enters the actuator 20, and is electrically connected to the first electric wire 71 (see FIG. 6).

[0090] The control unit 180 includes a CPU, RAM, ROM, input / output circuits, etc. The control unit 180 executes control by performing arithmetic processing based on programs and data stored in the ROM, etc. The control unit 180 can control the actuator 20 and the pump P2.

[0091] The control unit 180 controls the actuator 20 to move the movable body 10 between a contact position indicated by a virtual line in FIG. 12(a) and a separated position indicated by a solid line. The contact position is a position where the movable body 10 comes into contact with the seated occupant P. In the embodiment, when the movable body 10 is located at the contact position, it comes into contact with the head H of the seated occupant P. The separated position is a position where the movable body 10 is separated from the seated occupant P. In the embodiment, when the movable body 10 is located at the separated position, it is separated from the head H of the seated occupant P.

[0092] 12(b), when the control unit 180 predicts a collision of a vehicle such as an automobile, the control unit 180 controls the pump P2 to inflate the cell 140. As an example, the control unit 180 has a function of predicting whether or not the automobile is likely to collide based on information from a camera or the like provided on the automobile. When the control unit 180 predicts a collision of the automobile, the control unit 180 prohibits the movement of the movable body 10 and inflates the cell 140.

[0093] 13(a), the control unit 180 controls the actuator 20 to accommodate the movable body 10 in the recess 31B. Furthermore, as shown in FIG. 13(b), after accommodating the movable body 10 in the recess 31B, the control unit 180 controls the pump P2 to expand the cell 140.

[0094] Next, the effects of the embodiment will be described. The front part of the first bracket 350 to which the actuator 20 is fixed is fixed to the front part of the shell 310, and the rear part of the first bracket 350 is fixed to the rear part of the shell 310, thereby improving the mounting rigidity of the actuator 20.

[0095] The first bracket 350 includes a first lower wall 351, a first front wall 352, and a first rear wall 353, and the first front wall 352 is fixed to the front part of the shell 310, and the first rear wall 353 is fixed to the rear part of the shell 310, thereby ensuring, for example, the number of fixing points between the first bracket 350 and the shell 310. This makes it possible to further improve the mounting rigidity of the actuator 20.

[0096] Since first front wall 352 extends above actuator 20, multiple front fixing portions 311B, which are fixing points between first front wall 352 and shell 310, can be arranged apart vertically, thereby further improving the mounting rigidity of actuator 20. In addition, first front wall 352 can suppress the transmission of sound and heat generated when actuator 20 is driven to the seat occupant.

[0097] The headrest main body 31 includes the connecting member 370 that connects the pillar 32 and the first lower wall 351 of the first bracket 350, thereby improving the rigidity of the first bracket 350. This further improves the mounting rigidity of the actuator 20.

[0098] The headrest main body 31 includes the reinforcing member 380 fixed to both the first lower wall 351 and the connecting member 370, thereby further improving the rigidity of the first bracket 350. This further improves the mounting rigidity of the actuator 20.

[0099] The headrest main body 31 includes the second bracket 360, and the second bracket 360 includes the second lower wall 361 and the second front wall 362, which improves the rigidity of the first bracket 350 to which the second bracket 360 is fixed. This further improves the mounting rigidity of the actuator 20. Furthermore, by fixing the actuator 20 to the second front wall 362, the actuator 20, the second bracket 360, and the first bracket 350 can be fixed more easily than when the actuator 20 is fixed to the second lower wall 361, for example.

[0100] The first front wall 352 of the first bracket 350 and the second front wall 362 of the second bracket 360 are spaced apart in the front-rear direction, which makes it possible to prevent the accumulation of heat generated when the actuator 20 is driven. In addition, the first front wall 352 and the shell 310 can be easily fixed together. The first rear wall 353 of the first bracket 350 and the actuator 20 are spaced apart in the front-rear direction, which makes it possible to prevent the accumulation of heat generated when the actuator 20 is driven. In addition, the first rear wall 353 and the shell 310 can be easily fixed together.

[0101] The connecting member 370 connected to the first lower wall 351 of the first bracket 350 connects the two pillars 32, thereby further improving the rigidity of the first bracket 350. This further improves the mounting rigidity of the actuator 20.

[0102] Since the first bracket 350 does not have walls extending upward from the left and right ends of the first lower wall 351, heat generated when the actuator 20 is driven can be dissipated to the left and right of the first bracket 350.

[0103] The movable body 10 is arranged to protrude from the left side of the headrest body 31, which is different from the support surface 31A of the headrest body 31, thereby ensuring the head support function of the headrest S3 equipped with the movable body 10.

[0104] The front pad 321, which is part of the headrest pad 320, is disposed between the shell 310 and the cell 40, so that the cell 40 can be supported by the shell 310 via the headrest pad 320. When the cell 40 expands or contracts, the headrest pad 320 elastically deforms in accordance with the change in shape of the cell 40, thereby improving the stability of the support for the cell 40.

[0105] The headrest pad 320 has the first through-hole 322, so that the hose 50 can be easily passed through the inside of the headrest main body 31.

[0106] The headrest pad 320 has the first recess 323, so that a part of the hose 50 and the connection part between the cell 40 and the hose 50 can be accommodated in the first recess 323. This can reduce the feeling of contact with the hose 50 and the connection part between the cell 40 and the hose 50, thereby preventing a decrease in the seating feeling.

[0107] The first through-hole 322 and a part of the first recess 323 as a groove are formed not on the first surface 320A of the headrest pad 320 that supports the head of the seated occupant, but on the second surface 320B around the first surface 320A, thereby preventing the head of the seated occupant from hitting the hose 50. This improves the seating feeling.

[0108] The second through-hole 313 of the shell 310 overlaps with the first through-hole 322 of the headrest pad 320, allowing the hose 50 to pass through easily. In addition, the portion of the shell 310 around the second through-hole 313 can support the portion of the headrest pad 320 around the first through-hole 322.

[0109] Since the planar heater 60 extends up to the position of the first through-hole 322 in the vertical direction, the planar heater 60 can reinforce the portion of the headrest pad 320 around the first through-hole 322 .

[0110] The headrest pad 320 has the second recess 325 in which the cell 40 is disposed, thereby stabilizing the position of the cell 40. Furthermore, it is possible to prevent a step from being formed between the headrest pad 320 and the cell 40. Furthermore, since the periphery of the cell 40 is surrounded by the headrest pad 320, it is possible for the headrest pad 320 to protect the cell 40.

[0111] The headrest pad 320 has the third recess 326 in which the planar heater 60 is disposed, thereby stabilizing the position of the planar heater 60. Furthermore, it is possible to prevent a step from being formed between the headrest pad 320 and the planar heater 60. Furthermore, since the planar heater 60 is surrounded by the headrest pad 320, it is possible to protect the planar heater 60 by the headrest pad 320. The second recess 325 is formed on the bottom surface of the third recess 326, which prevents the portion where the cell 40 is disposed from rising. This improves the seating feeling.

[0112] The cell support body that supports the cell 40 is the shell 310 that houses the actuator 20 for moving the movable body 10, so that the shell 310 that houses the actuator 20 can be used as a member that supports the cell 40. Compared to when the cell support body and the shell 310 are separate members, the number of parts of the headrest S3 can be reduced.

[0113] The electric wire 70 passes through the first leg 210 and comes out to the outside of the headrest S3, and the hose 50 passes through the second leg 220 and comes out to the outside of the headrest S3, thereby suppressing interference between the electric wire 70 and the hose 50.

[0114] The first leg 210 is one of the pair of pillars 32, and the second leg 220 is the other of the pair of pillars 32, so that the pair of pillars 32 can be used to pass the electric wires 70 and the hose 50 separately.

[0115] The side surfaces of the first leg 210 and the second leg 220 are fixed to the connecting member 370 (support member 340), so that the first opening 211 and the second opening 221 can be left wide open. This allows the electric wire 70 to be easily passed through the first opening 211, and the hose 50 to be easily passed through the second opening 221.

[0116] The connecting member 370 (supporting member 340) has, at its lower end, a recess 371 that is recessed from bottom to top, so that at least one of the electric wire 70 and the hose 50 can be placed through the recess 371. This makes it possible to easily place at least one of the electric wire 70 and the hose 50.

[0117] The third opening 354 of the first bracket 350 (support member 340) overlaps with the first opening 211 of the first leg 210 when viewed from above, which allows the first electric wire 71 to be easily passed from the third opening 354 to the first opening 211. In addition, the first electric wire 71 can be passed from the third opening 354 to the first opening 211 via the shortest route.

[0118] The electrical equipment includes a sheet heater 60 provided in the front portion of the headrest main body 31, and a second electric wire 72 connected to the sheet heater 60 passes through a third through-hole 324 formed in the underside of the headrest pad 320 of the headrest main body 31, thereby preventing the head of the seated occupant from hitting the second electric wire 72. This improves seating comfort. The fourth through-hole 314 of the shell 310 overlaps with the third through-hole 324, allowing the second electric wire 72 to pass through easily. In addition, the portion of the shell 310 around the fourth through-hole 314 can support the portion of the headrest pad 320 around the third through-hole 324.

[0119] The movable body 10 is provided with the expandable and contractible cells 140, which allows for a wider range of motion and function for the movable body 10. This improves entertainment value.

[0120] The hose 150 is positioned closer to the center of the cross section of the movable body 10 perpendicular to the longitudinal direction than the wire 130, thereby reducing the change in the bending of the hose 150 when the movable body 10 moves.

[0121] By forming through-hole 113, which is larger than the cross-sectional size of second hose 152, on the side surface of movable body 10, second hose 152 can move within through-hole 113. This makes it possible to prevent unnecessary force from being applied to hose 150 when movable body 10 moves. This makes it possible to prevent hose 150 from being crushed or pulled, for example.

[0122] By providing the movable body 10 with the planar heater 160 that overlaps with the cell 140, it is possible to broaden the functionality of the movable body 10. Specifically, it is possible to provide warmth to the movable body 10. This can further improve entertainment value.

[0123] The control unit 180 can move the movable body 10 provided on the headrest S3 between the contact position and the separated position, thereby further improving the entertainment value.

[0124] The entertainment value can be further improved by the control unit 180 storing the movable body 10 in the recess 31B. By storing the movable body 10 in the recess 31B, the vehicle interior member 1 including the movable body 10 can be made compact.

[0125] After the control unit 180 accommodates the movable body 10 in the recess 31B, the control unit 180 expands the cell 140, thereby allowing the movable body 10 to be snugly accommodated in the recess 31B. Furthermore, movement of the movable body 10 within the recess 31B can be suppressed.

[0126] When the control unit 180 predicts a collision of a vehicle such as an automobile, the control unit 180 can inflate the cells 140 to improve safety.

[0127] Since the hose 150 has a first hose 151 extending along the movable body 10 and a plurality of second hoses 152 branching off and extending from the first hose 151, the size of the movable body 10 can be prevented from increasing compared to, for example, a case in which a plurality of hoses equal in number to the number of cells 140 are arranged along the movable body 10.

[0128] Although the embodiments have been described above, the headrest, the vehicle seat, and the vehicle interior member can be modified as appropriate as shown in the following examples. Note that the following description will focus on differences from the embodiments, and the same components as in the embodiments will be denoted by the same reference numerals and will not be described again.

[0129] In the embodiment, the connecting member 370 is provided separately from the pillar 32, but for example, the connecting member may be provided integrally with the pillar. As shown in FIGS. 14(a) and 14(b), the headrest S3 includes a headrest frame F3. The headrest frame F3 integrally includes a pair of pillars 32 and a connecting frame 33 serving as a connecting member. The headrest frame F3 is formed, for example, by bending a metal pipe.

[0130] The connecting frame 33 connects the two pillars 32. The connecting frame 33 has a pair of lower frames 33A, a pair of front frames 33B, and an upper frame 33C. The lower frames 33A extend forward from the upper ends of the corresponding pillars 32. The front frames 33B extend upward from the front ends of the corresponding lower frames 33A. The upper frames 33C extend left and right, connecting the upper ends of the pair of front frames 33B together.

[0131] The lower frame 33A connects the pillar 32 and a first lower wall 351 of the first bracket 350. The first lower wall 351 is fixed to the lower frame 33A by welding. The first front wall 352 of the first bracket 350 may be fixed to the front frame 33B by welding. By providing the connection frame 33, the rigidity of the first bracket 350 connected to the connection frame 33 can be improved. This can further improve the mounting rigidity of the actuator 20. Note that the hose 50 and the electric wire 70 are not shown in FIG. 14.

[0132] 15, the headrest main body 31 may further include a reinforcing frame 381. The reinforcing frame 381 is made of, for example, a metal pipe. The left and right ends of the reinforcing frame 381 are fixed by welding to the upper ends of the corresponding pillars 32 so as to connect the two pillars 32.

[0133] The headrest main body 31 may further include a second reinforcing member 382. The second reinforcing member 382 is made of, for example, a metal plate. Two second reinforcing members 382 are provided, spaced apart on the left and right. When viewed from the left and right direction, the second reinforcing members 382 have a substantially triangular shape. A lower end of the second reinforcing member 382 is fixed to the lower frame 33A of the connecting frame 33 by welding. A front end of the second reinforcing member 382 is fixed to the front frame 33B of the connecting frame 33 by welding.

[0134] By providing the reinforcing frame 381 and the second reinforcing member 382, ​​the rigidity of the headrest frame F3 can be improved, and therefore the rigidity of the first bracket 350 (see FIG. 14(b)) connected to the headrest frame F3 can be further improved. This further improves the mounting rigidity of the actuator 20.

[0135] In the embodiment, the connecting member 370 connects the two pillars 32, but for example, the connecting member does not have to connect the two pillars. As an example, the connecting member may separately include a first connecting member that connects one of the two pillars to the first lower wall of the first bracket, and a second connecting member that connects the other of the two pillars to the first lower wall. Also, the headrest main body does not have to be provided with a connecting member.

[0136] In the embodiment, the reinforcing member 380 is disposed on the front side of the connecting member 370, but for example, the reinforcing member may be disposed on the rear side of the connecting member 370. Also, the reinforcing member may be disposed on both the front and rear sides of the connecting member 370. Also, the reinforcing member may be fixed to the left and right ends of the connecting member 370 and the first lower wall 351 of the first bracket 350, and extend in the front-rear direction from in front of the connecting member 370 to behind the connecting member 370. Also, the reinforcing member may extend in the left and right directions. Also, the headrest main body does not have to be provided with a reinforcing member.

[0137] In the embodiment, the first bracket 350 does not have walls extending upward from the left and right ends of the first lower wall 351, but for example, the first bracket may have walls extending upward from the left and right ends of the first lower wall.

[0138] In the embodiment, the first front wall 352 of the first bracket 350 extends above the actuator 20, but for example, the upper end of the first front wall may be located below the upper end of the actuator.

[0139] In the embodiment, the headrest main body 31 includes the second bracket 360, but for example, the headrest main body may not include the second bracket. In this case, the actuator may be fixed directly to the first bracket. Also, the headrest main body may not include the first bracket, and the actuator may be fixed directly to the shell.

[0140] In the embodiment, the first front wall 352 of the first bracket 350 and the second front wall 362 of the second bracket 360 are spaced apart from each other in the front and rear directions, but for example, the first front wall and the second front wall may be in contact with each other.

[0141] In the embodiment, the first bracket 350 has a U-shape including the first lower wall 351, the first front wall 352, and the first rear wall 353. However, for example, the first bracket does not have to include the first front wall and the first rear wall. And, for example, the front portion of the first lower wall extending in the front-to-rear direction may be fixed to the front portion of the shell, and the rear portion of the first lower wall may be fixed to the rear portion of the shell.

[0142] In the embodiment, the front portion of the first bracket 350 is fixed to the front portion of the shell 310, and the rear portion of the first bracket 350 is fixed to the rear portion of the shell 310. However, for example, the left portion of the first bracket may be fixed to the left portion of the shell, and the right portion of the first bracket may be fixed to the right portion of the shell. Also, for example, the upper portion of the first bracket may be fixed to the upper portion of the shell, and the lower portion of the first bracket may be fixed to the lower portion of the shell.

[0143] In the embodiment, the third opening 354 of the first bracket 350 (support member 340) is a recess, but the third opening may be, for example, a through-hole.

[0144] In the embodiment, a part of the first recess 323 (groove) is formed on the second surface 320B of the headrest pad 320, but for example, the entire groove may be formed on the second surface.

[0145] In the embodiment, the headrest S3 has two legs (a pair of pillars 32), but the headrest may have, for example, three or more legs. As shown in Fig. 16, the headrest S3 has a pair of pillars 32 as first legs and a guide 230 as a second leg. In other words, the first legs are the pair of pillars 32, and the second leg is the guide 230.

[0146] The guide 230 is provided to extend downward from the headrest main body 31, similar to the pair of pillars 32. The guide 230 is a cylindrical member. As an example, the guide 230 is made of a metal pipe. The guide 230 has a guide opening 231 at its upper end. The guide opening 231 is an opening through which the hoses 50, 150 pass. The guide 230 is disposed between the pair of pillars 32. The left-right width of the guide 230 is greater than the left-right width of the pillars 32. In the embodiment, the pair of pillars 32 and the guide 230 each have a cylindrical shape, and the diameter of the guide 230 is greater than the diameter of the pillars 32.

[0147] A first electric wire 71 of the electric wires 70 passes through a first opening 211 at the upper end of the left pillar 32 and enters the left pillar 32. The first electric wire 71 passes through the left pillar 32, and the other end thereof exits from the lower end of the left pillar 32 to the outside of the headrest S3. A second electric wire 72 of the electric wires 70 passes through a second opening 221 at the upper end of the right pillar 32 and enters the right pillar 32. The second electric wire 72 passes through the right pillar 32, and the other end thereof exits from the lower end of the right pillar 32 to the outside of the headrest S3.

[0148] The hoses 50, 150 pass through the guide opening 231 and enter the guide 230. The hoses 50, 150 pass through the guide 230, and the other ends thereof extend from the lower end of the guide 230 to the outside of the headrest S3.

[0149] The headrest S3 further includes a beam member 390. The beam member 390 is provided in the headrest main body 31. More specifically, the beam member 390 is provided inside the headrest main body 31. The beam member 390 is a member that connects the pair of pillars 32 and the guide 230. The beam member 390 is made of, for example, a metal plate or a metal pipe. As an example, the beam member 390 is arranged behind the two pillars 32 and the guide 230. The two pillars 32 and the guide 230 each have their side surfaces fixed to the beam member 390 by welding.

[0150] When the first leg is a pair of pillars 32, the electric wires 70 can be passed through the pair of pillars 32. Furthermore, when the first leg is a pair of pillars 32 and the second leg is a guide 230 disposed between the pair of pillars 32, more electric wires 70 and hoses 50, 150 can be passed through, and therefore more electrical components and cells 40, 140 can be provided in the headrest main body 31.

[0151] The left-right width of the guide 230 through which the hoses 50, 150 pass is larger than the left-right width of the pillar 32, so that hoses 50, 150 with larger diameters can pass through, thereby enabling a good supply of fluid such as air to the cells 40, 140. Alternatively, the left-right width of the guide 230 through which the hoses 50, 150 pass is larger than the left-right width of the pillar 32, so that more hoses 50, 150 can pass through, so that more cells 40, 140 can be provided in the headrest main body 31.

[0152] The headrest S3 includes the beam members 390 that connect the pair of pillars 32 and the guide 230, thereby improving the rigidity of the guide 230 through which the hoses 50, 150 pass.

[0153] For example, the first leg may be only one of the pair of pillars 32. Also, for example, the headrest S3 including the guide 230 may not include the beam member 390. Also, for example, the left-right width of the guide may be approximately the same as the left-right width of the pillar. Also, electric wires and hoses may enter the legs through openings formed in the side surfaces of the legs, rather than through openings formed in the upper ends of the legs. In this case, a support member may be fixed to the upper ends of the legs.

[0154] In the embodiment, the movable body 10 includes a flexible, long movable body main body 110. However, for example, as shown in FIGS. 17(a) and 17(b), the movable body 10 may include a plurality of links as the movable body main body. The movable body 10 includes, as links, a hollow first link 191 and a hollow second link 192. The second link 192 is rotatable relative to the first link 191. Specifically, the second link 192 is connected to the first link 191 so as to be rotatable relative to the first link 191.

[0155] First link 191 and second link 192 each have a retaining portion 193 therein. Retaining portion 193 is a portion that retains hose 150. Retaining portion 193 has a plate shape and is provided inside links 191, 192. Retaining portion 193 has a through hole 193A through which first hose 151 of hose 150 passes. Through hole 193A passes through movable body 10 in the longitudinal direction. Retaining portion 193 may be provided integrally with links 191, 192, or may be provided as a separate member fixed to links 191, 192.

[0156] The first link 191 and the second link 192 of the movable body 10 have a holding portion 193 therein that holds the hose 150, so that when the movable body 10 moves, the hose 150 can be prevented from moving significantly within the hollow links 191, 192.

[0157] The movable body 10 may be configured such that only one of the first link 191 and the second link 192 has the holding portion 193. Furthermore, for example, the holding portion may be a clip or a claw that fastens a hose.

[0158] In the embodiment, the electric wire 170 is arranged along the surface on the outside of the movable body main body 110, but for example, the electric wire may be arranged inside the movable body main body 110, similar to the wire 130 or the hose 150. Also, in the embodiment, the planar heater 160 is provided on the movable body 10, but for example, the movable body does not need to be provided with a planar heater. Also, for example, the movable body may be provided with a microphone, a speaker, a camera, a vibration device that generates vibrations, etc.

[0159] As shown in Fig. 18(a), the cells 140 may be provided in a stacked state. As an example, the cells 140 include an inner cell 141 and an outer cell 142 that is placed on top of the inner cell 141. The outer cell 142 is located closer to the surface of the movable body 10 than the inner cell 141. A hose is individually connected to each of the inner cell 141 and the outer cell 142, and the inner cell 141 and the outer cell 142 are configured to be able to expand and contract independently.

[0160] The control unit 180 is capable of performing an operation to inflate only the inner cell 141, as shown in Fig. 18(b), and an operation to inflate both the inner cell 141 and the outer cell 142, as shown in Fig. 18(c). Instead of the operation to inflate only the inner cell 141, or in addition to the operation to inflate only the inner cell 141, the control unit 180 may be capable of performing an operation to inflate only the outer cell 142.

[0161] For example, after the movable body 10 is accommodated in the recess 31B, the control unit 180 inflates only the inner cell 141. Furthermore, when the control unit 180 predicts a car collision, it inflates both the inner cell 141 and the outer cell 142.

[0162] In the embodiment, the hose 150 includes the first hose 151 and a plurality of second hoses 152 that branch off and extend from the first hose 151 and are connected to the corresponding cells 140. However, for example, a hose may be provided for each cell. By providing a hose disposed inside the movable body for each cell, it becomes possible to control the expansion and contraction of each cell.

[0163] In the embodiment, the headrest S3 has the recess 31B on the surface that can accommodate the movable body 10, but for example, the headrest does not have to have a recess that can accommodate the movable body.

[0164] In the embodiment, the movable body 10 can move to a position where it comes into contact with the seated occupant P, but for example, the movable body may not come into contact with the seated occupant. Also, the movable body may further include pads that cover the movable body main body and the cell.

[0165] In the embodiment, the movable body 10 has a shape that resembles a part of an animal's body, but for example, as shown in FIG. 19 , the movable body may be an airbag 81. More specifically, the headrest S3 is provided with an airbag device 80. The airbag device 80 has an airbag 81 that is deployed outside the headrest main body 31, and an inflator 82 that supplies gas into the airbag 81. Providing the headrest S3 with the airbag device 80 can improve safety.

[0166] In the embodiment, the shell 310 that houses the actuator 20 has been exemplified as the cell support body that supports the cell 40, but as shown in FIG. 19 , for example, the cell support body may be a shell 310 that houses the airbag device 80. By using the shell 310 that houses the airbag device 80 as the cell support body, the shell 310 that houses the airbag device 80 can be used as a member that supports the cell 40. Furthermore, the number of parts of the headrest S3 can be reduced compared to when the cell support body and the shell 310 are separate members.

[0167] Furthermore, for example, the cell support may be a shell that houses both the actuator 20 and the airbag device 80. Furthermore, for example, the cell support may be a headrest frame provided inside the headrest body, a pillar, a case for an actuator that moves the movable body, a case for the airbag device, etc. Furthermore, the headrest does not have to include a movable body and an actuator that moves the movable body.

[0168] In the embodiment, the electrical equipment provided in the headrest main body 31 includes the actuator 20 and the sheet heater 60. However, for example, as shown in FIG. 19 , the electrical equipment may include an airbag device 80. The electric wire 70 includes a first electric wire 71 capable of supplying an electric signal to an inflator 82 of the airbag device 80. One end of the first electric wire 71 is connected to the inflator 82. Safety can be improved by including the airbag device 80 in the electrical equipment. Furthermore, for example, the electrical equipment provided in the headrest main body may include an air blower such as a fan or a blower, a display device such as a liquid crystal display, a vibration device, an air conditioner, a microphone, a speaker, a camera, etc.

[0169] In the embodiment, the shell 310 has the front cover 311 and the rear cover 312 and can be separated into the front and rear, but for example, the shell may be separated into the top and bottom, or the left and right. Also, for example, the shell may not be separated.

[0170] The headrest may also have a sound-absorbing structure on the inner surface of the shell. For example, the sound-absorbing structure may be a structure in which ribs or the like are provided on the inner surface of the shell to form irregularities. Alternatively, the sound-absorbing structure may be a structure in which sound-absorbing materials such as pads, porous sponges, or dampers are arranged on the inner surface of the shell.

[0171] In the embodiment, the first through-holes 322 of the headrest pad 320 are formed below the cells 40 when viewed from the front, that is, in the direction in which the cells 40 and the sheet heater 60 (seat member) overlap. However, for example, the first through-holes may be formed above the cells when viewed from the direction in which the cells and the seat member overlap. Also, the seat member does not have to extend up to the position of the first through-hole in the vertical direction.

[0172] Furthermore, for example, the first through-hole and the first recess may be formed at a position overlapping with the cell. As an example, the first through-hole and the first recess may be formed on the bottom surface of the second recess 325 in which the cell 40 is disposed. Furthermore, for example, the pad may not have a first recess.

[0173] In the embodiment, the sheet heater 60 is exemplified as the sheet member disposed between the cell 40 and the headrest skin 330, but the sheet member may be, for example, a thin sheet-like pad, a resin sheet, etc. Furthermore, the headrest does not necessarily have to include a sheet member such as a sheet heater.

[0174] In the embodiment, the cells 40 are disposed in the second recesses 325 with bottoms formed in the headrest pad 320 (pad), but for example, the cells may be disposed in through-holes formed in the pad. In this case, the cell support such as the shell 310 may be in contact with the cells and directly support the cells.

[0175] In the embodiment, the headrest S3 is provided separately from the seat back S2, but for example, as shown in Fig. 20, the headrest S3 may be provided integrally with the seat back S2. In other words, the vehicle seat S may be a seat in which the headrest S3 and the seat back S2 are provided integrally. The headrest does not need to include a pillar.

[0176] In the embodiment, the vehicle seat is exemplified as a vehicle seat S to be installed in an automobile, but the vehicle seat may be, for example, a seat to be installed in a railway vehicle, etc. Furthermore, the vehicle seat may be a seat to be installed in a vehicle other than a car, for example, an airplane, a ship, etc.

[0177] In the embodiment, the movable body 10 is provided so as to protrude from the left side surface of the headrest main body 31, which is a surface different from the support surface 31A of the headrest main body 31, but for example, the movable body may be provided so as to protrude from the right side surface of the headrest main body. Also, for example, the movable body may be provided so as to protrude from the upper surface or the rear surface of the headrest main body.

[0178] In the embodiment, the movable body 10 is provided so as to protrude from the headrest S3, but for example, the movable body may be provided so as to protrude from the seat back. Also, the movable body may be provided so as to protrude from the seat cushion. Also, if the seat has an armrest, the movable body may be provided so as to protrude from the armrest. Also, if the seat has an ottoman, the movable body may be provided so as to protrude from the ottoman.

[0179] In the embodiment, a vehicle seat S (vehicle seat) is exemplified as an interior member main body provided in a vehicle, but the interior member main body may also be, for example, a door lining, a dashboard, a center console, etc. Furthermore, the interior member main body may also be a doll, a stuffed animal, a robot, etc. provided in a vehicle. The vehicle interior member does not have to be equipped with a planar heater.

[0180] The elements described in the embodiments and modifications may be implemented in any combination. [Explanation of symbols]

[0181] 10 Movable body 20 Actuator 31 Headrest body 40 cells 50 Horse 60 Planar heater (sheet material) 80 Airbag device 81 Airbag 310 Shell (cell support) 313 Second Through Hole 320 Headrest Pad (Pad) 320A 1st page 320B 2nd side 321 Front pad (part of pad) 322 First Through Hole 323 First Recess 325 Second recess 326 Third Recess 330 Headrest cover (cover) S Vehicle seat (vehicle seat) S1 seat cushion S2 seat back S3 Headrest

Claims

1. a headrest body that can be contacted by the head of a seated person; A headrest comprising: a cell that can expand and contract and is provided in the headrest body; The headrest body is a cell support that supports the cell; a pad covering the cell support, a portion of the pad being disposed between the cell support and the cell; A headrest comprising the cell and a skin covering the pad.

2. a hose connected to the cell; The headrest according to claim 1, wherein the pad has a first through-hole for passing the hose through the inside of the headrest body.

3. The pad has a first recess that is recessed toward the inside of the headrest, The headrest according to claim 2 , wherein the first through-hole is formed in a bottom surface of the first recess.

4. the first recess is a groove in which a portion of the hose is disposed, The pad is a first surface that supports the head of a seated occupant; a second surface formed around the first surface and positioned rearward as the distance from the first surface increases, The headrest according to claim 3 , wherein the first through-hole and at least a portion of the groove are formed in the second surface.

5. the cell support has a second through hole for passing the hose through; The headrest according to claim 2 , wherein the second through-hole overlaps with the first through-hole.

6. a sheet member disposed between the cells and the skin, the sheet member overlapping the cells; the first through-hole is formed above or below the cell when viewed from a direction in which the cell and the sheet member overlap, The headrest according to claim 2, wherein the sheet member extends up to the position of the first through hole in the vertical direction.

7. The headrest according to claim 1, wherein the pad has a second recess that is recessed toward the inside of the headrest body, and the cell is disposed in the second recess.

8. a sheet member disposed between the cells and the skin, the sheet member overlapping the cells; the pad has a third recess that is recessed toward the inside of the headrest body, and the third recess has a third recess in which the seat member is disposed, The headrest according to claim 7, wherein the second recess is formed in a bottom surface of the third recess.

9. a movable body provided so as to protrude outside the headrest body; an actuator for moving the movable body, 2. The headrest of claim 1, wherein the cell support is a shell that houses the actuator.

10. an airbag device having an airbag, 2. The headrest according to claim 1, wherein the cell support is a shell that houses the airbag device.

11. Seat cushion and Seat back and A vehicle seat comprising: a headrest according to any one of claims 1 to 10.

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